BSNL TTA Mock Test – 4

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1. Total number of questions : 202. Time allowed : 20 minutes3. Each Question carry 1 marks and No negative marking.4. Don’t refresh the page. It will restart this quiz.5. At the last of the quiz click on finish quiz tab to see the results.

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Review

Question 1 of 20

1. Question

1 points

Who is the author of the book “For King and Another Country : Indian Soldiers on the Western Front 1914-18” ?

Shrabani Basu

Ramachandra Guha

K N Panikkar

Mridula Mukherjee

Correct

Incorrect

Question 2 of 20

2. Question

1 points

Who has been appointed as chairman of the Central Board of Excise and Customs (CBEC) ?

Najib Shah

Manjit Singh

Sundarajan

Ram Tirth

Correct

Incorrect

Question 3 of 20

3. Question

1 points

Choose the one which best expresses the meaning of the given word.

GREGARIOUS

Sociable

Turbulent

Pugnacious

Clumsy

Correct

Incorrect

Question 4 of 20

4. Question

1 points

Choose the word opposite in meaning to the given word.

RECEDE

Rush

Advance

Approach

Forward

Correct

Incorrect

Question 5 of 20

5. Question

1 points

The concept of transfer function applies to :

Linear time varying system

Linear time invariant systems only

Linear and non-linear systems only

Only to MIMO systems

Correct

Incorrect

Question 6 of 20

6. Question

1 points

In a shaded pole motor the phase displacement occur by :

Centrifugal switch

Shading rings

Capacitor

Main pole winding

Correct

Incorrect

Question 7 of 20

7. Question

1 points

A d.c. series motor is accidently connected to single phase a.c. supply. The torque produced will be :

Of zero average value.

Oscillating

Steady and unidirectional

Pulsating and unidirectional

Correct

Incorrect

Question 8 of 20

8. Question

1 points

Demand Factor is defined as :

Maximum load / average load

Average load / maximum load

Maximum load / total connected load

Total connected load / maximum load

Correct

Incorrect

Question 9 of 20

9. Question

1 points

The relative permeability of a paramagnetic substance is :

Unity

Slightly more than unity

Zero

Less than unity

Correct

Incorrect

Question 10 of 20

10. Question

1 points

Doping materials are called impurities because they :

Decrease the number of charge carriers

Change the chemical properties of semiconductors

Make semiconductors less than 100 percent pure

Alter the crystal structure of the pure semiconductors

Correct

Incorrect

Question 11 of 20

11. Question

1 points

A clipper circuit always :

Need a DC source

Clips both half cycles of input signal

Clips upper portions of the signal

Clips some part of the input signal

Correct

Incorrect

Question 12 of 20

12. Question

1 points

Which one of the following is the effect of heavy doping of tunnel diode ?

Reduces the width of the depletion layer

Reduces the reverse breakdown voltage

Produces a negative resistance

All of the above

Correct

Incorrect

Question 13 of 20

13. Question

1 points

What is the color code for a 220Ω 5% resistor ?

Red, Red, Brown, Gold

Orange, Orange, Black, Gold

Red, Red, Black, Gold

Red, Red, Brown, Silver

Correct

Incorrect

Question 14 of 20

14. Question

1 points

A squelch circuit in a TV receiver is used to :

Cut off IF when AGC is maximum

Cut off audio amplifier when carrier is absent

Cut off IF when AGC is inoperative

Cut off brightness circuit when AGC is inoperative

Correct

Incorrect

Question 15 of 20

15. Question

1 points

Modems are used for data transmission telephone lines to :

Increase the transmission capacity

Improve noise performance

Incorporate error control coding

Eliminate dc components in the transmitted signal

Correct

Incorrect

Question 16 of 20

16. Question

1 points

The current delivering capacity of a cell depends on :

Condition of the electrolyte

Quality of electrolyte

Physical size of electrolyte

All of the above

Correct

Incorrect

Question 17 of 20

17. Question

1 points

A relaxation oscillator is one which :

Has two stable states

Relaxes indefinitely

Produces nonsinusoidal output

Oscillates continuously

Correct

Incorrect

Question 18 of 20

18. Question

1 points

The “ECL” has very high switching speed because the transistors are :

Switching between cut-off and saturation regions

Switching between cut-off and active regions

Switching between cut-off and saturation regions

None of these

Correct

Incorrect

Question 19 of 20

19. Question

1 points

If one wants to design a binary counter, preferred type of flip-flop is :

D-type

SR-type

latch

JK-type

Correct

Incorrect

Question 20 of 20

20. Question

1 points

In time division multiplexing :

Time is doubled between bits of a byte

Time slicing at CPU level takes place

Total time available in the channel is divided between several users and each user is allotted a time slice

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